Kawasaki Ninja 400 vs Aprilia Rs 660
Side-by-side comparison for used motorcycle buyers
Kawasaki Ninja 400 vs Aprilia Rs 660. Kawasaki Ninja 400: 45 hp @ 10,000 rpm hp, 168 kg (wet/curb weight) weight, top speed 175 km/h, Motoryk rating 8.5/10. Aprilia Rs 660: 100 hp @ 10,500 rpm hp, 169 kg (wet/curb weight) weight, top speed 235 km/h, Motoryk rating 8.5/10.
Performance at a Glance
Green = winner per metric · Bars are relative to the higher value
Kawasaki Ninja 400
Aprilia Rs 660
Horsepower (hp)
45 hp
100 hp
Torque (Nm)
38 Nm
67 Nm
Top Speed (km/h)
175 km/h
235 km/h
Weight (kg) — lower is better
168 kg
169 kg
Type
Sport
Supersport
Horsepower
45 hp @ 10,000 rpm
100 hp @ 10,500 rpm
Torque
38 Nm @ 8,000 rpm
67 Nm @ 8,500 rpm
Top Speed
175 km/h
235 km/h
Weight
168 kg (wet/curb weight)
169 kg (wet/curb weight)
Fuel
3.7 L/100km (approx. 27 km/L typical real-world average)
5.5 L/100km (approx. 18 km/L typical real-world average)
Fairing
Yes
Yes
Individual Reviews
Kawasaki Ninja 400
8.5/10
"The benchmark small-displacement bike that rewards riders of all experience levels."
Pros
+Genuinely engaging chassis dynamics
+Strong resale value retention
+Excellent real-world power delivery
Cons
−Used prices remain inflated
−Pillion comfort is poor
−Fairing repairs get expensive
Aprilia Rs 660
8.5/10
"A genuinely special middleweight — buy it, but buy it carefully."
Pros
+Thrilling mid-range power delivery
+Exceptional chassis and handling
+Premium electronics for class
Cons
−Early ECU software problems
−Fragile fairings, expensive replacements
−Patchy dealer network support
Top 10 Accessories
Picks that work on either bike.
